Francis alpha cothias



NITED STATES PATENT OFFICE.

FRANCIS ALPHA OOTHIAS, OF IVRY-PORT, FRANCE.

' ALLOY.

SPECIFICATION forming part of Letters Patent No. 586,095, dated July 13,1897.

Application filed April 2, 1897. $erial No. 630,446. (No specimens.)Patented in France June 2, 1896,No. 256,852 in Belgium .Tune30,1896,No.122,223; in England June 30, 1896, No. 14,479; in AustriaJuly 31, 1896,110. 46/3/1 12 in Italy July 31,1896,No.42,221; inLuxemburg July 31, 1896, No. 2,582, and in Spain .l'uly31,1896,No.19,417.

To all whom it may concern.-

Be it known that I,FRANOIS ALPHA Oo'rnms, a citizen of the Republic ofFrance, residing at 9 Rue Victor Hugo, Ivry-Port, Seine, in the Republicof France,have invented certain new and useful Improvements in Alloys,of Which the following is a full, clear, and exact specification.

The invention has been patented in France, 10 No. 256,852, dated June2,1896; in Belgium, No. 122,223, dated June 30, 1896; in Austria, No.46/3442, dated July 31, 1896; in Italy, No. 42,221, dated July 31, 1896;in Luxemburg, No. 2,582, dated July 31, 1896; in Eng- I5 land, No.141,479, dated June 30, 1896, and in Spain, No. 19,417, dated July 31,1896. f The invention forming the subject of this lapplication relatesto a new metallic alloy and [process of making the same. This alloy hasconsiderable tensile strength. Its resisting force is as high as thirtykilograms per square millimeter of section. It can be soldered andWorked with the greatest case. It consists of a mixture ingivenproportions of copper, tin, 2 5 and aluminium, to which I add chlorid ofam* monia and phosphorus in the state of salt. l copper, forty grams;tin, eighty grams; aluminium, eight hundred and eighty grams; goltotal,one-thousand grams.

I This alloy has a density below three and is worked Without fouling thetools and can be very easily tinned.

To manufacture this alloy, I proceed in the following manner: I begin byputting into a crucible the requisite quantities of copper and tin, andI let them melt together. This first alloy being well melted, I leave itto cool down 5 until it becomes a pasty mass. Then I add the 4prequisite proportions of aluminium, which immediately heightens thetemperature of the mass, and finally I heat the matter to a very hightemperature. The substances are there- 1 by combined in the mostcomplete manner and I obtain a perfectly homogeneous alloy. In order tofacilitate the combination of the The composition of this alloy is asfollows:

various elements and reduce the oXids thatT will form at every melting,I add during the l last manipulation about a kilogram of chlorid ofammonia per one thousand kilograms of 5,0 alloy. I add also during thelast manipulation a small quantity of phosphorus in order to give to thealloy an easier flow and greater fluidity. This phosphorus can be usedin the 5 state of salt. These salts are phosphites of 5 5 titanium,manganese,wolfram,tungsten, &c., which further increase the hardness ofthe alloy. 7'

WVhen the alloy is completely molten, it is castinto ingot-molds,wherein it is left to cool.

To make perfectly sure that the composition of the alloy is rigorouslycorrect, a sample is taken and analyzed, and if one finds that therequisite proportions do not exist the alloy is melted over again andsuch material added as is necessary to give to the mass the requisitecomposition.

The various metals used to increase the re sisting force and hardness ofalloys (titanium, manganese, Wolfram, tungsten, duo.) are ,70

added to the mixture in the state of salts (chiefiyin the state'ofphosphides).either during the last melting or during a remelting of theingot performed after the first casting and the taking of the samples. 75

The alloy obtained in the Way described above is fusible at atemperature below 800 centigrade. It is suficient to heat it in ket tlesin the open air, like lead or tin, and without furnaces or cruciblesbeing required.

This alloy molds itself perfectly in metal molds.

I claim- The described alloy consisting of copper forty parts; tineighty parts and aluminium eight hundred and eighty parts.

In Witness whereof I have hereunto set my hand in presence of twoWitnesses.

FRANCIS ALPHA OOTHIAS. WVitnesses:

EMILE BERT, EDWARD P. MAOLEAN.

